Water pipe connecting structure for fire engineering installation

The utility model belongs to the technical field of fire engineering, and discloses a fire engineering installation water pipe connecting structure which comprises a first water pipe, a first installation ring is fixedly installed at the right end of the first water pipe, a connecting pipe is fixedly installed at the right end of the first installation ring, and a spring is fixedly installed on the outer wall of the connecting pipe. A spring plate is fixedly mounted at the lower end of the spring, a sliding block is fixedly mounted at the lower end of the spring plate, a second mounting ring is slidably connected to the outer end of the connecting pipe, a sliding groove for the sliding block to slide is formed in the second mounting ring, and the sliding block at the outer end of the connecting pipe at the right end of the first mounting ring is placed in the sliding groove in the second mounting ring; and when the connecting pipe is connected with a second water pipe in the second mounting ring, the connecti